Improvements in textedit and hotkey manager

* Set textedit's cursor position to the end of text in some situations
* Send hotkey messages to the current channel instead of default channel
* Allow to overwrite sprites using otml and pngs

modules/game_hotkeys/hotkeys_manager.lua

@@ -289,7 +289,7 @@ function call(keyCombo)
     local hotKey = hotkeyList[keyCombo]
     if hotKey ~= nil and hotKey.itemId == nil and hotKey.value ~= '' then
       if hotKey.autoSend then
-        g_game.talk(hotKey.value)
+        modules.game_console.sendMessage(hotKey.value)
       else
         modules.game_console.setTextEditText(hotKey.value)
       end